Holder for moving picture films



Nov. 7, 1933. R. P. 'STINEIIVIANW 1,934,245

HOLDER FOR MOVING PICTURE FILMS Filed 061;. 5. 1932 Patented Nov. 7, 1933 iJNITED STATES PATENT OFFICE 3 Claims.

This invention relates to a holder for moving picture films of the character of that shown in U. S. Patent No. 1,170,576, issued jointly to Stineman & Darby, on February 8, 1916.

Broadly stated, the invention resides in providing a spirally disposed web upon supports consisting of radial arms which hold the convolutions of the spirally wound web in such spaced relation to each other as to permit of the reception of a moving picture film therebetween; the

holder constituting a spacing and carrying means for the web during the operations of developing, fixing, washing, etc.

The object of the present invention is to provide improved means for locating and holding the convolutions of the spirally wound. web with respect to the radial arms which constitute the supporting means for the same.

In the accompanying drawing- Figure l is a front elevation of a film holder constructed in, accordance with the invention.

Figure 2 is a vertical sectional view upon a magnified scale through a portion of one of the radial arms. Figure 3 is an enlarged plan view of a portion nor ends to a central hub disk 6 of cup-like formation. This hub disk is spanned by a handle '7 and is perforated, at 8, so that the holder may be mounted-to rotate upon or with an arbor not shown, during the winding or unwinding of the film, as hereinafter described.

Secured to the radial arms is a spiral web 10. The outer ends of the arms 5 are bent upwardly, as indicated at 5a and are engaged with the outer convolution of the spiral. If desired, additional short arms 5b may be disposed between the arms'5 to further aid in strengthening and bracing the structure; these arms being likewise secured to the spiral web 10.

The present invention differs from and is an improvement over the subject matter of the prior patent referred to in that it embodies means integral with the radial arms for engaging, locating and holding theinner or lower edge portions of the several convolutions of the spiral.

By referring to Fig. 2, it will be seen that the arms 5 are provided with portions 5c, 5d struck upwardly and projecting in opposition to each other to provide between them spaces which receive the lower or inner edge portions of the spiral convolutions 10.

Thus, it is not necessary to use great care in assembling the spiral upon the arms because these struck out portions automatically locate the spiral convolutions in properly spaced relation to each other and, by forcing the portions 5d downwardly after the convolution 10 has been properly located, said convolution may be pinched or bound between the struck up portions and 5d and held in place. Further, if brazing, welding, soldering or the like be employed as a means for holding the convolutions of the spiral in engagement with the radial arms, the struck up portions hold the spiral in place during such operation. In addition, the struck up portions back up, support and brace the convolutions in a way to greatly increase the strength and rigidity of the structure as a whole.

The device is used in the same manner as is described with respect to the device of the patent above referred to. That is to say, in operation, one end of the film to be developed is secured to a hook 11 at the inner convolution of the spiral and bodily rotation is imparted to the film holder. By properly guiding the film against the face of the spiral the film is wound thereon; it being understood that the width of the spiral is not as great as the width of the film. ,After the winding of the film upon the holder has been completed, the holder is lifted by the handle 7 and placed face upward in a shallow tank containing the developing fluid. After the developing of the film is completed the holder may be again lifted by the handle and placed in the fixing bath, and after fixing is completed it may be placed in a washing tank, it being apparent that it is possible to carry out all of the steps without touching the film itself, and while the face of the film is maintained out of contact with any object which might tend to scratch or abrade it. Further, any part of the length of the film may be inspected from timej'to time, without the necessity of removing the entire film from the tank. Since all of thefilm is submerged at a time it follows that its development is uniform throughout.

One advantage of the structure of this character is that thefilm is wound in a minimum amount of space and in such manner as to require a minimum amount of developing fluid.

By virtue of the fact that the device may be used whereby the loss of a number of scenes from a complete series of pictures is prevented. Where the film is transported from the place of its exposure to a distant point for development, it frequently happens that some of the scenes are ruined in transit or in development and after it is too late to reproduce them except at great inconvenience and expense.

While the elements shown and described are well adapted to serve the purposes for which they are intended it is to be understood that the invention is not limited to the precise construction set forth, but that it includes within its purview whatever is new that comes within the spirit of the appended claims.

Having described my invention, what I claim i t 1. A structure of the character described comprising a plurality of radial arms, a spirally disposed web secured to the radial arms, and pairs of opposed integral portions struck upwardly above the plane of the upper faces of said arms between which the inner edge portions of said web are received and bound.

2. A structure of the character described comprising a plurality of radial arms,a spirally disposed web secured to the radial arms, and pairs of opposed integral portions struck upwardly above the plane of the upper faces of said arms between which the inner edge portions of said web are received and pinched.

3. In a device of the character described the combination with a spiral web, the convolutions of which lie in spaced relation to each other, a radial arm underlying the convolutions of the web, and a plurality of guiding and holding elements struck upwardly above the plane of the upper face of said am and uniformly spaced therealong and constituting locating and supporting means for positioning and holding the web in proper place upon the arm, said web being pinched between said upwardly struck portions.

RALPH P. STINEMAN. 

